Question

How many degrees is x and how is it?

Answer 1

All angles make 180 degrees, so on the triangle to the right, 90 plus 50 makes 140, so we need 40. 40/2 = 20 so y=30.Therefore 3y= 60 and then add the right angle which makes 150. Now 180-160= 30, so the answer is B) 30.

Answer 2

$2y + 90 + 50 = 180$
(angle sum of triangle)
y=15
$3y + x + 90 = 180$
(angle sum of triangle)
$3(15) + x + 90 = 180 \\ x = 45$